FinHopper: design surf & windsurf fins in your browser

FinHopper is a parametric design tool for surfboard and windsurf fins. Shape the outline, pick the foil section, choose your mount (FCS, FCS II, Futures, US box, Tuttle, Power Box) and export a print-ready STL or CAD STEP. No CAD software required.

What you can do

• Shape the fin outline: depth, base, rake and tip with live 3D feedback
• Pick real foil sections and control thickness distribution
• Choose the mount system your board actually uses
• Export watertight STL for 3D printing or STEP for CNC and CAD

Built for surfers, windsurfers and shapers who want a fin no one sells.